Dynamo-electric machine.



No. 783,398. PATENTED FEB. 21, 1905. B. A. 3333mm.

DYNAMO ELECTRIC MACHINE.

APPLIOATIOH rmm nov. 24, 1903.

V I In as n for m "165596 y 3 Bernard/f fickr'md Attorney v the above methods arccomhiried and part of;

tric machine the seat of the greatest amount the core of ,-the windings into sections UNITED STATES Patented February 21, 1905.

PATENT OFFICE.

ASSIGNMENTS, TlON OF OHIO.

ammo-eczema: momma.

1 10, assloNoa, BY MESNE COMPANY, A CORPORA- srncrmomxoa forming part 1 Letters Patent No. mews; eel: February .21, 1 90.5.

Application 5m x vmbu 24,1903. 1 g mam. I

To all whom it may concern:

Be it known that I, BERNARD Am no}: Brm- BEND, a citizen of the United Status, residing at Norwood, in the county of Hamilton and State of OhioJhaveinventedeenttiip na ve-ed useful l-mprovemcn'isinzllw-namor i0'- chines, of which fliefollowizlg yis-a-fiqlhfilgar, and exact specification. I

My in yention relatesto-dynamoselccbric machinery, and particularly to means for .ventilating and cooling that @9336 of toadlripoin which revolving lield magoets are used.

The ventilating and coolingofflhe'wi ndin of a dynamo andthose parts-heated by ed 5 currents is usually uncomplisihedby dividing" forming air-spaces between them. Another mrthod is to force air overthe parts on the shaft. 7

- By my invention the advantages of hothof the machine itself serves as the blower or fan, and 1 so construct the other parts that a plenti ful supply of air is furnished to that part of the machine serving as the blower. Moreover, by my invention the amount of air-supplied is not only plentiful, but it is dirocted to the parts where it is most 'HPCGSSMS' in a very cliiciont manner. o

in the revolving field type of dynamo-clacof heating is in the stationary windingondits core. Thu revolving liold-windings andafieldpoles are also heated ,to some degree; but the heating of these parts is ordinarily not ex cessivo; due mainly to the fact thatjin revolving the free circulatiomof the air about them keeps their temperature low. The stationary windings and frame are not, howevencooled to any appreciable degreeby the flow of iiir across and around the field-magnets; as such How of air is not directed radially. Neither doe; it suliicc-to provide ventilating-passages through thcficld-inagets, as the tiowof air is than restricted by the small widtlrof the passsages, as well as their excessive length, which length inchulcs not only the length of the Farm v n lat ng-space i ie iv'v idtli' of the pole is carooieilmm d a h cithe' m eas We fibe -movie pa r; rlwfieidm eta which resolts'in more iiaio lie gg n msarys o thefiej d oil iyi h 13 699. .Y .5 11; gigolo! )iesistance of tl 1c. \vrnding- "my meal ,1: I provid v n ilat ngla iagomaa in-thj iatte are p ide solely a v ac gbewe n' th Po mniii'lating-spaces is o at limth o o $12 39 each wmagnetie'fljaxkneed only be considered. In

no; l:or:a a'iuctio,n the air forced outw dljv agein'sttheetationary winding .ami car an t o gh li e rein.kilii ingbim ihete pa y on account of thega tion of tri'fa ql force. but n tial; 15y reasoli' of the fact that the wfl ly r My'inrention will be hcttorondorstood by reference to-the followingdescription and acoompanying drawings, wliiciishow the preferred form of construction, and the novelty the'rgofwill hedefiaitely sctforth in the claims.

Figure! is an outline of a large alternatingcurrentzmechjnc, which is a type oflrnachi ie to which my invention is particularlyappli cable. Fig.9 is an enlarged sectional iew on line 2 20f Fig. I, and Fig. 3 is a sectional view on line 3 3 of Fig. 2.

The stationaryframe 1 is built up of the yokelmado in box ormand provided with mimcrousopcningsfion-the sides. The yoke is divided into sections by the partitions 2', which lave-the holes 3 formed therein. The

stationary core is built up of laminated sections 4, which are spaced apart by separators 5. The laminae are dovetailedinto the inner crflargctl portionsfiof the partitions 2'. The separators 5 may be made in any approved manner and as shown are made up of radial ribs 7, connected lay thin cross-strips 8, and have projections 9, which dovetail into the crossportions 6. Thelaminationsareclamped between the end plates 10 by the bolts 11.

an abunda t sum.

ram fi ammo rar an a sp in 111 vii'im, of th i riphery of the: stationar from the interior. of-thefie as the means for securing ,aseparated from each other by grators 18, similar to the separators tationary frame. The separators l1 'w se dovetailed ontothe cross-bars Intoeth' I riphery of the laminated seefare' built up'o laminae clamped together by he sections, 17 are bolted tothe plates 22 and over these qvr tlaas ea. m auras I Ictions 17 are supported some fe segments 15, t ere ein e Lbtweenthem. i' g the machine is in operation, air is I 1, th li 'thfispacerfliii asgindicatedr .r v i Fig: nd-it a t-tea es through; e ventilating spaeesbetweeii sections 1 .out between 'the pplesw The air isthen forcid radially aga'nsttheinner pera s-err throughthe spaces b tw l isctioiis' yoke, where iupasse tu itnittg, theg l pl esl =3. InthiS wa the airjs' circulated;,thriig h the parts where it, is most esirediiiaivery" elficient manner, and the, air-passages can be madeofa'mple 'size "A's/the rir'jsgshttliea li i' was spacesbetween the poles it is forciblyfahned through the {stationary fraine, tassel-(14m nets thus serving as thebladesof a'ta'ii'. Although I have shown and described a specific embodiment of my invention, '1 'wish it understood thatI am notlimitedtothe exact construction shown. For example, vari-' ous forms of separators may bciused, as w ell the poles in place, also the poles could be bolted directly to the rim of the revolving frame and openings made in the rim between the poles, and other modifications could be developed, without departing from tlie spirit of myinvention. i

I claim as my invention 1. In a dynamo-electric machine, the com bination of a revolving field-frame and ,a stationary frame, said lield-frame having a series of poles arranged in a circumferential dircc tion on its periphery and ventilating-spaces; through the rim of said field-frame and com municating with 'open spaces between said circumferentially-arrai3ged poles, the poles described.

a u \l I acting as fans to force the alr drawn through the rim toward the stationary frame, substantially as described.

2. In a dynamo-electric machine, the combination of a revolving held-frame and a stationary frame, said field-frame having a series of poles arranged in a circumferential direction on its periphery. and rentilating'spaces through the rimof said field-frame, and communicating with open spaces between said circuinferentially-arrangcd poles, the poles acting as fans to force the air drawn through the rim toward the stationary frame, and said stationary frame being also provided with, \0117 tilating-spaces, substantially as described.

3.,ln a dynamo-electric machine, the coin- ,bimition with armairing field-frame, and a stationary 'frame, said field-frame having a series of poles arranged in a circumferential direction on its periphery, and ventilatingspaces through the rim of said field-frame, and eomiiiunicating with open spaces between said circuint'erentially-arranged poles, tlie ,pQlesaeting-as fans to force the air drawn thr'oiifih tlie'iim 'toward the stationary frame,

bina t i oii of astationary armature-frame havjing 'dpen ngs' for the purpose of ventilation Jand aifeyolvinjti licld-fralne having open spaces 'between the field-magnets, said lield -fr:nnc "comprising a rim made up of segments carrie jdf bythe arms of the frame and sections supportedflby said segments some distance 'the tjefro misa'i'dsections being spaced from eachotlieflthe iield-n1agnets acting as fans ,ito oi'e' theair drawn through the rim to ward the stationary frame, substantially as 5. L In a dynamo-electric machine, ill! coinbination ofastationary arinature-frmne having openings for the purpose of ventilation andarevolvingfield-framehnvingopenspaces between the field-magnets, said field-frame comprising a rim made up of segments carried hyqthe arms of theframc, cross-baryon said segments and laminated sections supported by said cross-bars some distance from the R041 nients, said sections being spaced from each other, the held-magnets acting as fans to force theairdrawn through the rim toward the stationary frame, substantially as described.

In testimony whereol'l aliix nrvsig'nntnre in presencep'l' two witnesses.

lilullNMil) All'lllUlL lll'illiiiih'li.

\Vitncssesr L. K. Samoa,

SAN Finn; Runs. 

